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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hadoop.hive.ql.udf;

import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.UDF;
import org.apache.hadoop.io.Text;
import org.apache.hive.common.util.HiveVersionInfo;


/**
 * UDFVersion
 */
@Description(name = "version",
    value="_FUNC_() - Returns the Hive build version string - includes base " +
          "version and revision.")
public class UDFVersion extends UDF {
  private static final String versionInfo = String.format("%s r%s",
      HiveVersionInfo.getVersion(), HiveVersionInfo.getRevision());

  public Text evaluate() {
	  return new Text(versionInfo);
  }
}